
package com.base.util;

public class MoneyFormat {
	//private String moneyString;
	private final String [] pattern ={"零","壹","贰","叁","肆","伍","陆","柒","捌","玖"};
	private final String [] cPattern ={"","拾","佰","仟","万","拾","佰","仟","亿"};
	private final String [] cfPattern = {"","角","分"};
	private final String ZEOR = "零";
//	public MoneyFormat(String moneyString) {
//		this. moneyString = moneyString;
//	}
	public String format(String moneyString){
		int dotPoint = moneyString.indexOf("."); //判断是否为小数
		String moneyStr; 
		if(dotPoint != -1){
			moneyStr = moneyString.substring(0,moneyString.indexOf("."));
		}
		else{
			moneyStr = moneyString;
		}
		StringBuffer fraction = null; //小数部分的处理,以及最后的yuan.
		StringBuffer ms = new StringBuffer(); 
		for(int i = 0;i < moneyStr.length();i++){
			ms.append(pattern[moneyStr.charAt(i) - 48]); //按数组的编号加入对应大写汉字
		}
		
		int cpCursor = 1;
		for(int j = moneyStr.length() - 1;j > 0;j--){
			ms.insert(j,cPattern[cpCursor]); //在j之后加字符,不影响j对原字符串的相对位置
			//只是moneyStr.length()不断增加
			//insert(j,"string")就在j位置处插入,j=0时为第一位
			cpCursor = cpCursor == 8?1:cpCursor + 1; //亿位之后重新循环
		}
		
		while(ms.indexOf("零拾") != -1){ //当十位为零时用一个"零"代替"零拾"
			//replace的起始于终止位置
			ms.replace(ms.indexOf("零拾"),ms.indexOf("零拾") + 2,ZEOR);
		}
		while(ms.indexOf("零佰") != -1){ //当百位为零时,同理
			ms.replace(ms.indexOf("零佰"),ms.indexOf("零佰") + 2,ZEOR);
		}
		while(ms.indexOf("零仟") != -1){ //同理
			ms.replace(ms.indexOf("零仟"),ms.indexOf("零仟") + 2,ZEOR);
		}
		while(ms.indexOf("零万") != -1){ //万需保留，中文习惯
			ms.replace(ms.indexOf("零万"),ms.indexOf("零万") + 2,"万");
		}
		while(ms.indexOf("零亿") != -1){ //同上
			ms.replace(ms.indexOf("零亿"),ms.indexOf("零亿") + 2,"亿");
		}
		while(ms.indexOf("零零") != -1){//有连续数位出现零，即有以下情况，此时根据习惯保留一个零即可
			ms.replace(ms.indexOf("零零"),ms.indexOf("零零") + 2,ZEOR);
		}
		while(ms.indexOf("亿万") != -1){ //特殊情况，如:100000000,根据习惯保留高位
			ms.replace(ms.indexOf("亿万"),ms.indexOf("亿万") + 2,"亿");
		}
		while(ms.lastIndexOf("零") == ms.length()-1){ //当结尾为零j，不必显示,经过处理也只可能出现一个零
			ms.delete(ms.lastIndexOf("零"),ms.lastIndexOf("零") + 1);
		}
		
		int end;
		if((dotPoint = moneyString.indexOf(".")) != -1 ){ //是小数的进入 
			String fs = moneyString.substring(dotPoint + 1,moneyString.length());
			if(fs.indexOf("00") == -1 || fs.indexOf("00") >= 2){//若前两位小数全为零，则跳过操作
				end = fs.length() > 2?2:fs.length(); //仅保留两位小数
				fraction = new StringBuffer(fs.substring(0,end));
				for(int j = 0;j < fraction.length();j++){
					fraction.replace(j,j+1,this.pattern[fraction.charAt(j) - 48]); //替换大写汉字
				}
				for(int i = fraction.length();i > 0;i--){ //插入中文标识
					fraction.insert(i,cfPattern[i]);
				}
				fraction.insert(0,"元"); //为整数部分添加标识
			}
			else{
				fraction = new StringBuffer("元整"); 
			}
		}
		else{
			fraction = new StringBuffer("元整");
		}
		//ms.append(fraction); //加入小数部分
		return ms.toString();
	}
}